Change box motion for looms or the like



March 8,1949. w. H. BAKER 2,463,673

. CHANGE BOX MOTION FOR LOOMS on THE LIKE Filed June 2, 1945 Z4 Sheets-Sheet 1 arch 8, 1949. v w. H. BAKER 2463673 CHANGE BOX MOTION FOR LOOMS OR THE LIKE Filed June 2, 1945 4 Sheets-Sheet 2' IN V EN TOR.

March g, 1949. BAKER 2,463,673

CHANGE BOX MOTION FOR LOOMS OR THE LIKE Filed June 2, 1945 4 Sheets-Sheet 5 w. H. BAKER 2,463,6R

CHANGE BOX MOTION FOR LOOMS OR THE LIKE Filed June 2, 1945 4 Sheets-Shet 4 INVENTOR.

Patented Mar. 8, 1949 CHANGE BOX MOTION FOR LOOMS OR THE LIKE William H. Baker, Boston, Mass.

Application June 2, 1945, Serial No. 597,221

2 Claims.

I have invented a change box motion for looms. It is more adaptable to looms Where complicated styles of fabrics are woven, and especially where a single pick from any shuttle is desired, This is also adaptable to looms operated automatically with bobbin changing instrumentalities. One form of the invention is shown in the accompanying description, and drawings in which,

Fig. 1 is a front elevation of a portion of a loom equipped with this change box motion,

Fig. 2 is a plan view, including the housing, or lay-end of the new change box motion.

Fig. 3 is the inner end box guide for the shuttle boxes.

Fig. 4 is the outside box guide for the shuttle boxes carrying some other features.

Fig. 5 shows an end view of a group of the elements shown in Fig. 4 including the picker stick, and picker.

Fig. 6 is a plan view of one of the shuttle boxes.

Fig. '7 is a front elevation of same.

Fig. 8 is a front and Fig. 8A an end view respectively of the frame, or carrier for the shuttle boxes.

Fig. 9 is an end view of the shuttle boxes, grouped in position with the guide rollers of the shuttle boxes in the guides, which are shown dotted for simplicity.

Like reference characters refer to the same part in all the drawings.

In the drawings, lis the loom frame, 2 is the housing to support the change box motion, and takes the place of the old lay-end. Mounted to slide vertically in the housing 2, is the frame 3, or carrier of the shuttle boxes shown in Fig. 8. This frame 3 has lateral guides or grooves 4 and 5, in which the shuttle boxes slide transversely, backward and forward of the 100m. This movement enables any of the shuttle boxes to be at the race level, and in weaving position at 6 and (see Fig. 9). The shuttle boxes 8, 9, I0, and shown in Fig. 9, are mounted in special guides l2, and I3, which are fixed on the loom frame 2, the guide l2 being at the rear and the guide l3 being at the front of the path of the picker stick shown in dotted lines in this figure. The shuttle boxes are controlled in their lateral movement by rollers l4 and 5, which run in grooves in the guides I2 and. I3.

When a shuttle box comes to the race or Weaving level, the rollers l4 and I5 of that shuttle box are positioned in the short vertical dwell sections I6 and ll of the guides l2 and 3, shown clearly in Fig. 9. These vertical dwell sections form a secure lock for the boxes when they are in weaving position. The guides |2 and l3 are fastened to the housing 2 in Fig. 2. The extension l8, on the outer guide I3 (see Fig, 4) forms a protection against any of the shuttles from jarring out of position as the loom runs. Each shuttle box has the binder 9, and the binder spring 20, as is usual in looms having change box motions. Referring further to the guides l2 and I3, and more particularly in Fig. 5, the picker stick 2|, and the picker 22 mounted on same shown traveling as usual, and the picker operates as usual on the shuttle which is at the race level. Fig. 1 has been cut away to show the picker stick buffer 23, and its holder 24. The picker stick buffer has always been used on this type of loom, and the change of construction has been made so it will fit in the holder 24. The buffer holder 24, is secured to the housing 2, shown in Fig. 1, by bolts 25. Fig. 5 shows how the guide I2 is at the back of the picker stick 2|, in the loo-m to permit the picker stick to miss the guide as shown at 26.

Referring to Fig. 9, the position of the shuttle boxes, show box II at the bottom, below the race level out of the vertical position of box H], on which the picker stick 2|, and the picker 22 would naturally operate in this position of box l0. Box I0 is in right position for bobbin changing, if automatic bobbin changing were used. The space above the box would be free for the introduction of the new bobbin into the shuttle, and the space below would be free for the ejection of the spent bobbin. The shuttle boxes 8, 9, l0, and H as shown in Fig. 6 have enlarged openings 35 shown in Fig. 6 in the bottom to allow the passage of the empty bobbin when the device is used in automatic looms. Shuttle boxes 8 and 9 are shown at the back to make this automatic condition complete.

The supports of each shuttle box are tongues 28 and 29, shown clearly in Figs. 6 and 7. These tongues fit into grooves 4 and 5 (Fig. 8) and form mountings for the shuttle boxes in the frames whereby the shuttle boxes can slide forwardly and backwardly in said frame 3. The tongues 3| and 32 on the sides of frame 3, run in grooves 33 and 34 in the housing, or lay-end as the case may be. The frame 3 with its shuttle boxes 8, 9, I0, and II is moved vertically in said grooves by and through the box motion rod 21, which fits into the boss 30 at the lower end of the frame, and the usual chains, springs, and box motion elements common to this type of loom. The operation of the change box motion in some respects such as the vertical tongues 3| and 32 in the frame 3, coacting with the grooves 33 and 34 acts as before, and is well known, the same being controlled by a pattern chain in the box motion controlling device, which is used on this type of looms. As the frame 3 rises under control of the pattern instrumentalities, the shuttle boxes 8, 9, l0, and II move laterally according to position in the loom so that each box as it comes to the race, or weaving level, is held securely there by the rollers l4, and I5 reposing in guides 12, and I3 at the short vertical sections l6, and IT. This device has the usual spring reliefs found on change box looms, and the protective finger common to such looms operates on the binder, as

it comes to the weaving position.

Having thus described my invention, what I claim is:

1. In a loom, a lay, a plurality of shuttle boxes associated with said lay, shuttle box carrying means mounted on said lay for substantially vertical movement relative thereto, said shuttle boxes being independently mounted on said carrying means, for substantially horizontal movement relative thereto, and guiding means on the lay for said shuttle boxes and said carrying means, the arrangement being such that when the carrying means is moved vertically, each shuttle box has a combined vertical and horizontal movement when moving between active and inactive positions relative to the lay.

2. In a loom, a lay, vertically movable carrying means mounted on the lay, a plurality of horizontally movable shuttle boxes independently mounted on said carrying means, rollers carried by said shuttle boxes, fixed guides on said lay for cooperation with said rollers, the arrangement being such that said fixed guides cause said shuttle boxes to move horizontally during a portion at least of their vertical movement when said carrying means moves vertically.

WILLIAM H. BAKER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 572,245 Claviez Dec. 1, 1896 1,180,345 Wahler et al Apr. 25, 1916 1,484,812 Crompton et a1 Feb. 26, 1924 1,516,869 Sieber Nov. 25, 1924 1,600,378 Wells Sept, 21, 1926 1,804,369 Brown May 5, 1931 FOREIGN PATENTS Number Country Date 342,803 Great Britain Feb. 12, 1931 380,378 Great Britain Sept. 15, 1932 456,504 Great Britain Nov. 10, 1936 

